摘要： F5隐写分析算法利用收缩现象，比较剪裁后图像直方图和估计载体图像直方图的差异进行检测。针对该算法的特点，提出改进的F5算法，通过部分消除冗余零系数，提高嵌入率、防止收缩现象的发生。在标准图像集上的实验结果表明，改进算法改善了含密直方图的收缩现象，各检测参数与原始载体图像差别较小，可以有效抵抗F5隐写分析算法。

关键词: 隐藏算法, F5算法, F5隐写分析算法, 离散余弦变换直方图

Abstract: F5 steganalysis uses the shrinkage and compares the differences between estimation of the cover-image histogram and the stego-image to realize detection. This paper presents improved F5 algorithm to resist such detection based on the characteristic of F5 steganalysis. It can eliminate a part of surplus 0, elevate embedding efficiency and prevent the shrinkage. Experiment on the standard images shows the improved algorithm can get parameters close to the cover-image, and resist F5 steganalysis.

Key words: hiding algorithm, F5 algorithm, F5 steganalysis, Discrete Cosine Transformation(DCT) histogram

中图分类号: 

• TP301.6